advantages of gyratory crusher over jaw crusher

jaw crusher vs cone crusher | advantages and disadvantages

Jaw crushers and cone crushers both are a classic laminated crusher. Also is the most mainstream crusher type. Jaw crusher is usually used as a primary crusher and second-class crusher. Cone crusher is usually used as secondary crusher or three-stage crusher machine. Jaw crusher and cone crusher are usually arranged on the stone crusher plant in two stages.

Jaw crusher breaks the rock to 10 ~ 30 cm size. Cone crushing machine further broke the stone to below 10 cm. Large cone crushers (gyratory crushers) also can as head crushers. Fine jaw crusher also can as a two-stage crusher, crushing stone to cm grade particle size range.

Cone rock crusher and Jaw stone crusher are a laminated crushing principle. Which is commonly known as the impact crushing principle The nature of crushing doesnt change too much, although the actuator of crushing use of different structure. The cone crusher adopts the extrusion process between the grinding wall and the crushing wall. Jaw crusher adopts the extrusion process between the moving jaw plate and the static jaw plate.

Cone crusher and jaw crusher are widely used, but the applicability of the two types of crusher is different. Jaw crusher has the most extensive adaptability and can meet the crushing requirements of almost any kind of materials. Cone crusher is also very wide applicability, but the Metso cone crusher price is high. Low corrosive materials can choose a low-cost impact crusher. Therefore, the applicability of metsos cone crusher has been reduced in economic consideration.

Cone crushing main advantages: High productivity, less power consumption, work more stable, small vibration crushing ratio, product granularity is more uniform, any side can give ore, and can be crowded to ore.

Jaw crusher main advantages: simple structure, low manufacturing cost, convenient maintenance, reliable work, small machine height, easy to configuration, high viscosity for the water ore is not easy to block.

Cone crushing equipment main disadvantages: Complex structure, equipment high costs, height. And need a higher workshop, machine heavy, inconvenient to transport, not suitable for crushing sticky ore, operation and maintenance more complex.

Fine jaw crusher is more used as a secondary crusher machine. It can crush the materials below 200mm to cm level. two jaw crushers can be equipped with the complete crushing production line. The single machine capacity of fine jaw breaking is low, and the breaking capacity of less than 100 tph can only be obtained by means of parallel connection of two machines.

Cone crusher as second-level crushing equipment, single machine crushing capacity of several hundred tons per hour. It occupies the absolute advantage in production capacity. Therefore, the fine jaw crusher can only be used in the secondary crushing station with small capacity. The cone crusher can be used in the secondary crushing station with a large capacity.

The matching of jaw crusher and cone crusher is based on the crushing segmentation. It is necessary to consider whether the particle size of jaw crusher can enter the cone crusher to form secondary crushing. For example, Compound Cone crusher configured in the back process of jaw crusher. The jaw crusher equipment broken too large discharge will plug the cone crusher feed mouth. Resulting crusher plant can not run smoothly.

For the matching of jaw crusher and cone crusher. It is necessary to compare the particle size range of the two materials. And adopt to the best matching range can obtain the most efficient production running state.

Jiangxi Shicheng stone crusher manufacturer is a new and high-tech factory specialized in R&D and manufacturing crushing lines, beneficial equipment,sand-making machinery and grinding plants. Read More

gyratory crusher - an overview | sciencedirect topics

Gyratory crushers were invented by Charles Brown in 1877 and developed by Gates around 1881 and were referred to as a Gates crusher [1]. The smaller form is described as a cone crusher. The larger crushers are normally known as primary crushers as they are designed to receive run-on-mine (ROM) rocks directly from the mines. The gyratory crushers crush to reduce the size by a maximum of about one-tenth its size. Usually, metallurgical operations require greater size reduction; hence, the products from the primary crushers are conveyed to secondary or cone crushers where further reduction in size takes place. Here, the maximum reduction ratio is about 8:1. In some cases, installation of a tertiary crusher is required where the maximum reduction is about 10:1. The secondary crushers are also designed on the principle of gyratory crushing, but the construction details vary.

Similar to jaw crushers, the mechanism of size reduction in gyratory crushers is primarily by the compressive action of two pieces of steel against the rock. As the distance between the two plates decreases continuous size reduction takes place. Gyratory crushers tolerate a variety of shapes of feed particles, including slabby rock, which are not readily accepted in jaw crushers because of the shape of the feed opening.

The gyratory crusher shown in Figure 2.6 employs a crushing head, in the form of a truncated cone, mounted on a shaft, the upper end of which is held in a flexible bearing, whilst the lower end is driven eccentrically so as to describe a circle. The crushing action takes place round the whole of the cone and, since the maximum movement is at the bottom, the characteristics of the machine are similar to those of the Stag crusher. As the crusher is continuous in action, the fluctuations in the stresses are smaller than in jaw crushers and the power consumption is lower. This unit has a large capacity per unit area of grinding surface, particularly if it is used to produce a small size reduction. It does not, however, take such a large size of feed as a jaw crusher, although it gives a rather finer and more uniform product. Because the capital cost is high, the crusher is suitable only where large quantities of material are to be handled.

However, the gyratory crusher is sensitive to jamming if it is fed with a sticky or moist product loaded with fines. This inconvenience is less sensitive with a single-effect jaw crusher because mutual sliding of grinding surfaces promotes the release of a product that adheres to surfaces.

The profile of active surfaces could be curved and studied as a function of the product in a way to allow for work performed at a constant volume and, as a result, a higher reduction ratio that could reach 20. Inversely, at a given reduction ratio, effective streamlining could increase the capacity by 30%.

Maintenance of the wear components in both gyratory and cone crushers is one of the major operating costs. Wear monitoring is possible using a Faro Arm (Figure 6.10), which is a portable coordinate measurement machine. Ultrasonic profiling is also used. A more advanced system using a laser scanner tool to profile the mantle and concave produces a 3D image of the crushing chamber (Erikson, 2014). Some of the benefits of the liner profiling systems include: improved prediction of mantle and concave liner replacement; identifying asymmetric and high wear areas; measurement of open and closed side settings; and quantifying wear life with competing liner alloys.

Crushers are widely used as a primary stage to produce the particulate product finer than about 50100mm. They are classified as jaw, gyratory, and cone crushers based on compression, cutter mill based on shear, and hammer crusher based on impact.

A jaw crusher consists essentially of two crushing plates, inclined to each other forming a horizontal opening by their lower borders. Material is crushed between a fixed and a movable plate by reciprocating pressure until the crushed product becomes small enough to pass through the gap between the crushing plates. Jaw crushers find a wide application for brittle materials. For example, they are used for comminution of porous copper cake. A Fritsch jaw crusher with maximal feed size 95mm, final fineness (depends on gap setting) 0.315mm, and maximal continuous throughput 250Kg/h is shown in Fig. 2.8.

A gyratory crusher includes a solid cone set on a revolving shaft and placed within a hollow body, which has conical or vertical sloping sides. Material is crushed when the crushing surfaces approach each other and the crushed products fall through the discharging opening.

Hammer crushers are used either as a one-step primary crusher or as a secondary crusher for products from a primary crusher. They are widely used for crushing hard metal scrap for different hard metal recycling processes. Pivoted hammers are pendulous, mounted on the horizontal axes symmetrically located along the perimeter of a rotor. Crushing takes place by the impact of material pieces with the high speed moving hammers and by contact with breaker plates. A cylindrical grating or screen is placed beneath the rotor. Materials are reduced to a size small enough to pass through the openings of the grating or screen. The size of the product can be regulated by changing the spacing of the grate bars or the opening of the screen.

The feature of the hammer crushers is the appearance of elevated pressure of air in the discharging unit of the crusher and underpressure in the zone around the shaft close to the inside surface of the body side walls. Thus, the hammer crushers also act as high-pressure, forced-draught fans. This may lead to environmental pollution and product losses in fine powder fractions. A design for a hammer crusher (Fig. 2.9) essentially allows a decrease of the elevated pressure of air in the crusher discharging unit [5]. The A-zone beneath the screen is communicated through the hollow ribs and openings in the body side walls with the B-zone around the shaft close to the inside surface of body side walls. As a result, the circulation of suspended matter in the gas between A and B zones is established and the high pressure of air in the discharging unit of crusher is reduced.

Crushers are widely used as a primary stage to produce the particulate product finer than about 50100 mm in size. They are classified as jaw, gyratory and cone crushers based on compression, cutter mill based on shear and hammer crusher based on impact.

A jaw crusher consists essentially of two crushing plates, inclined to each other forming a horizontal opening by their lower borders. Material is crushed between a fixed and a movable plate by reciprocating pressure until the crushed product becomes small enough to pass through the gap between the crushing plates. Jaw crushers find a wide application for brittle materials. For example, they are used for comminution of porous copper cake.

A gyratory crusher includes a solid cone set on a revolving shaft and placed within a hollow body, which has conical or vertical sloping sides. Material is crushed when the crushing surfaces approach each other and the crushed products fall through the discharging opening.

Hammer crushers are used either as a one-step primary crusher or as a secondary crusher for products from a primary crusher. They are widely used for crushing of hard metal scrap for different hard metal recycling processes.

Pivoted hammers are pendulous, mounted on the horizontal axes symmetrically located along the perimeter of a rotor and crushing takes place by the impact of material pieces with the high speed moving hammers and by contact with breaker plates. A cylindrical grating or screen is placed beneath the rotor. Materials are reduced to a size small enough pass through the openings of the grating or screen. The size of product can be regulated by changing the spacing of the grate bars or the opening of the screen.

The feature of the hammer crushers is the appearance of elevated pressure of air in the discharging unit of the crusher and underpressure in the zone around of the shaft close to the inside surface of the body side walls. Thus, the hammer crushers also act as high-pressure forced-draught fans. This may lead to environmental pollution and product losses in fine powder fractions.

A design for a hammer crusher (Figure 2.6) allows essentially a decrease of the elevated pressure of air in the crusher discharging unit [5]. The A-zone beneath the screen is communicated through the hollow ribs and openings in the body side walls with the B-zone around the shaft close to the inside surface of body side walls. As a result, circulation of suspended matter in the gas between A- and B-zones is established and high pressure of air in the discharging unit of crusher is reduced.

Jaw crushers are mainly used as primary crushers to produce material that can be transported by belt conveyors to the next crushing stages. The crushing process takes place between a fixed jaw and a moving jaw. The moving jaw dies are mounted on a pitman that has a reciprocating motion. The jaw dies must be replaced regularly due to wear. Figure 8.1 shows two basic types of jaw crushers: single toggle and double toggle. In the single toggle jaw crusher, an eccentric shaft is installed on the top of the crusher. Shaft rotation causes, along with the toggle plate, a compressive action of the moving jaw. A double toggle crusher has, basically, two shafts and two toggle plates. The first shaft is a pivoting shaft on the top of the crusher, while the other is an eccentric shaft that drives both toggle plates. The moving jaw has a pure reciprocating motion toward the fixed jaw. The crushing force is doubled compared to single toggle crushers and it can crush very hard ores. The jaw crusher is reliable and robust and therefore quite popular in primary crushing plants. The capacity of jaw crushers is limited, so they are typically used for small or medium projects up to approximately 1600t/h. Vibrating screens are often placed ahead of the jaw crushers to remove undersize material, or scalp the feed, and thereby increase the capacity of the primary crushing operation.

Both cone and gyratory crushers, as shown in Figure 8.2, have an oscillating shaft. The material is crushed in a crushing cavity, between an external fixed element (bowl liner) and an internal moving element (mantle) mounted on the oscillating shaft assembly. An eccentric shaft rotated by a gear and pinion produces the oscillating movement of the main shaft. The eccentricity causes the cone head to oscillate between the open side setting (o.s.s.) and closed side setting (c.s.s.). In addition to c.s.s., eccentricity is one of the major factors that determine the capacity of gyratory and cone crushers. The fragmentation of the material results from the continuous compression that takes place between the mantle and bowl liners. An additional crushing effect occurs between the compressed particles, resulting in less wear of the liners. This is also called interparticle crushing. The gyratory crushers are equipped with a hydraulic setting adjustment system, which adjusts c.s.s. and thus affects product size distribution. Depending on cone type, the c.s.s. setting can be adjusted in two ways. The first way is by rotating the bowl against the threads so that the vertical position of the outer wear part (concave) is changed. One advantage of this adjustment type is that the liners wear more evenly. Another principle of setting adjustment is by lifting/lowering the main shaft. An advantage of this is that adjustment can be done continuously under load. To optimize operating costs and improve the product shape, as a rule of thumb, it is recommended that cones always be choke-fed, meaning that the cavity should be as full of rock material as possible. This can be easily achieved by using a stockpile or a silo to regulate the inevitable fluctuation of feed material flow. Level monitoring devices that detect the maximum and minimum levels of the material are used to start and stop the feed of material to the crusher as needed.

Primary gyratory crushers are used in the primary crushing stage. Compared to the cone type crusher, a gyratory crusher has a crushing chamber designed to accept feed material of a relatively large size in relation to the mantle diameter. The primary gyratory crusher offers high capacity thanks to its generously dimensioned circular discharge opening (which provides a much larger area than that of the jaw crusher) and the continuous operation principle (while the reciprocating motion of the jaw crusher produces a batch crushing action). The gyratory crusher has capacities starting from 1200 to above 5000t/h. To have a feed opening corresponding to that of a jaw crusher, the primary gyratory crusher must be much taller and heavier. Therefore, primary gyratories require quite a massive foundation.

The cone crusher is a modified gyratory crusher. The essential difference is that the shorter spindle of the cone crusher is not suspended, as in the gyratory, but is supported in a curved, universal bearing below the gyratory head or cone (Figure 8.2). Power is transmitted from the source to the countershaft to a V-belt or direct drive. The countershaft has a bevel pinion pressed and keyed to it and drives the gear on the eccentric assembly. The eccentric assembly has a tapered, offset bore and provides the means whereby the head and main shaft follow an eccentric path during each cycle of rotation. Cone crushers are used for intermediate and fine crushing after primary crushing. The key factor for the performance of a cone type secondary crusher is the profile of the crushing chamber or cavity. Therefore, there is normally a range of standard cavities available for each crusher, to allow selection of the appropriate cavity for the feed material in question.

Depending on the size of the debris, it may either be ready to enter the recycling process or need to be broken down to obtain a product with workable particle sizes, in which case hydraulic breakers mounted on tracked or wheeled excavators are used. In either case, manual sorting of large pieces of steel, wood, plastics and paper may be required, to minimise the degree of contamination of the final product.

The three types of crushers most commonly used for crushing CDW materials are the jaw crusher, the impact crusher and the gyratory crusher (Figure 4.4). A jaw crusher consists of two plates, with one oscillating back and forth against the other at a fixed angle (Figure 4.4(a)) and it is the most widely used in primary crushing stages (Behera etal., 2014). The jaw crusher can withstand large and hard-to-break pieces of reinforced concrete, which would probably cause the other crushing machines to break down. Therefore, the material is initially reduced in jaw crushers before going through any other crushing operation. The particle size reduction depends on the maximum and minimum size of the gap at the plates (Hansen, 2004).

An impact crusher breaks the CDW materials by striking them with a high-speed rotating impact, which imparts a shearing force on the debris (Figure 4.4(b)). Upon reaching the rotor, the debris is caught by steel teeth or hard blades attached to the rotor. These hurl the materials against the breaker plate, smashing them into smaller particle sizes. Impact crushers provide better grain-size distribution of RA for road construction purposes, and they are less sensitive to material that cannot be crushed, such as steel reinforcement.

Generally, jaw and impact crushers exhibit a large reduction factor, defined as the ratio of the particle size of the input to that of the output material. A jaw crusher crushes only a small proportion of the original aggregate particles but an impact crusher crushes mortar and aggregate particles alike and thus generates a higher amount of fine material (OMahony, 1990).

Gyratory crushers work on the same principle as cone crushers (Figure 4.4(c)). These have a gyratory motion driven by an eccentric wheel. These machines will not accept materials with a large particle size and therefore only jaw or impact crushers should be considered as primary crushers. Gyratory and cone crushers are likely to become jammed by fragments that are too large or too heavy. It is recommended that wood and steel be removed as much as possible before dumping CDW into these crushers. Gyratory and cone crushers have advantages such as relatively low energy consumption, a reasonable amount of control over the particle size of the material and production of low amounts of fine particles (Hansen, 2004).

For better control of the aggregate particle size distribution, it is recommended that the CDW should be processed in at least two crushing stages. First, the demolition methodologies used on-site should be able to reduce individual pieces of debris to a size that the primary crusher in the recycling plant can take. This size depends on the opening feed of the primary crusher, which is normally bigger for large stationary plants than for mobile plants. Therefore, the recycling of CDW materials requires careful planning and communication between all parties involved.

A large proportion of the product from the primary crusher can result in small granules with a particle size distribution that may not satisfy the requirements laid down by the customer after having gone through the other crushing stages. Therefore, it should be possible to adjust the opening feed size of the primary crusher, implying that the secondary crusher should have a relatively large capacity. This will allow maximisation of coarse RA production (e.g., the feed size of the primary crusher should be set to reduce material to the largest size that will fit the secondary crusher).

The choice of using multiple crushing stages mainly depends on the desired quality of the final product and the ratio of the amounts of coarse and fine fractions (Yanagi etal., 1998; Nagataki and Iida, 2001; Nagataki etal., 2004; Dosho etal., 1998; Gokce etal., 2011). When recycling concrete, a greater number of crushing processes produces a more spherical material with lower adhered mortar content (Pedro etal., 2015), thus providing a superior quality of material to work with (Lotfi etal., 2017). However, the use of several crushing stages has some negative consequences as well; in addition to costing more, the final product may contain a greater proportion of finer fractions, which may not always be a suitable material.

The first step of physical beneficiation is crushing and grinding the iron ore to its liberation size, the maximum size where individual particles of gangue are separated from the iron minerals. A flow sheet of a typical iron ore crushing and grinding circuit is shown in Figure 1.2.2 (based on Ref. [4]). This type of flow sheet is usually followed when the crude ore contains below 30% iron. The number of steps involved in crushing and grinding depends on various factors such as the hardness of the ore and the level of impurities present [5].

Jaw and gyratory crushers are used for initial size reduction to convert big rocks into small stones. This is generally followed by a cone crusher. A combination of rod mill and ball mills are then used if the ore must be ground below 325 mesh (45m). Instead of grinding the ore dry, slurry is used as feed for rod or ball mills, to avoid dusting. Oversize and undersize materials are separated using a screen; oversize material goes back for further grinding.

Typically, silica is the main gangue mineral that needs to be separated. Iron ore with high-silica content (more than about 2%) is not considered an acceptable feed for most DR processes. This is due to limitations not in the DR process itself, but the usual customer, an EAF steelmaking shop. EAFs are not designed to handle the large amounts of slag that result from using low-grade iron ores, which makes the BF a better choice in this situation. Besides silica, phosphorus, sulfur, and manganese are other impurities that are not desirable in the product and are removed from the crude ore, if economically and technically feasible.

Beneficiation of copper ores is done almost exclusively by selective froth flotation. Flotation entails first attaching fine copper mineral particles to bubbles rising through an orewater pulp and, second, collecting the copper minerals at the top of the pulp as a briefly stable mineralwaterair froth. Noncopper minerals do not attach to the rising bubbles; they are discarded as tailings. The selectivity of the process is controlled by chemical reagents added to the pulp. The process is continuous and it is done on a large scale103 to 105 tonnes of ore feed per day.

Beneficiation is begun with crushing and wet-grinding the ore to typically 10100m. This ensures that the copper mineral grains are for the most part liberated from the worthless minerals. This comminution is carried out with gyratory crushers and rotary grinding mills. The grinding is usually done with hard ore pieces or hard steel balls, sometimes both. The product of crushing and grinding is a waterparticle pulp, comprising 35% solids.

Flotation is done immediately after grindingin fact, some flotation reagents are added to the grinding mills to ensure good mixing and a lengthy conditioning period. The flotation is done in large (10100m3) cells whose principal functions are to provide: clouds of air bubbles to which the copper minerals of the pulp attach; a means of overflowing the resulting bubblecopper mineral froth; and a means of underflowing the unfloated material into the next cell or to the waste tailings area.

Selective attachment of the copper minerals to the rising air bubbles is obtained by coating the particles with a monolayer of collector molecules. These molecules usually have a sulfur atom at one end and a hydrophobic hydrocarbon tail at the other (e.g., potassium amyl xanthate). Other important reagents are: (i) frothers (usually long-chain alcohols) which give a strong but temporary froth; and (ii) depressants (e.g., CaO, NaCN), which prevent noncopper minerals from floating.

the detailed explanation of advantages and disadvantages of

(MENAFN - GetNews) Cone crusher is the basic type of crusher equipment in the field of stone crushing. Because it is foundational, its application range is very wide. To meet the crushing requirements of various fields better and more appropriately, cone crushers can be divided into coarse crushing and medium-fine crushing according to the discharge requirements. Also, they can be divided into spring cone crushers, hydraulic cone crushers, and high-efficiency cone crushers according to the structure and function. The following is a detailed introduction to the characteristics and differences of various types of cone crusher equipment. According to the discharge requirements, it can be divided into: Coarse crushing: When it comes to coarse crushing, many people will think of a jaw crusher at the first time. Indeed, jaw crusher is the representative of coarse crushing equipment, but to meet the needs of material crushing more economically and efficiently, it is very important to choose coarse crushing equipment reasonably according to the characteristics and requirements of various materials. For example, there are also cone crushers specially used for coarse crushing, which are called gyratory crushers. It is mainly used in the beneficiation industry and other industrial sectors to coarsely crush ores of various hardness. Because the machine needs to process larger pieces of material, the feed inlet is required to be wide, the movable cone is upright, and the fixed cone is inverted to meet the crushing requirements for ore materials. So, what are the advantages of the gyratory crusher compared to the jaw crusher, which is used for coarse crushing? As follows: Gyratory crusher The main advantages of the gyratory crusher (compared with the jaw crusher ): 1. The crushing cavity has large depth, continuous work, high production capacity, and low unit power consumption. Compared to the jaw crusher with the same width of the feed mouth, the production capacity is more than twice that of the latter, and the power consumption per ton of ore is 0.5-1.2 times lower than that of the jaw crusher. 2. The work is relatively stable, the vibration is lighter, and the basis weight of the machine and equipment is relatively small. The basis weight of the gyratory crusher is usually 2-3 times the weight of the machine and equipment, while the basis weight of the jaw crusher is 5-10 times the weight of the machine itself. 3. It can be filled with the ore, and the large-scale gyratory crusher can feed the raw ore directly, without the need for additional ore bins and feeders. However, the jaw crusher cannot be packed with the ore, and the ore is required to be evenly fed, so it is necessary to set up another ore warehouse (or ore hopper) and a mining feeder. When the ore lump size is greater than 400 mm, it is necessary to install an expensive heavy-duty plate type to the miner. Medium and fine crushing: In addition to the coarse crushing mentioned above, cone crushers can also be used for medium and fine crushing. According to the current situation of the crushing workshops of most of GUBTcountry's concentrators, most of the medium crushing equipment uses standard cone crushers, and most of the fine crushing equipment uses short-head cone crushers, which has almost been finalized. Since the basic structure and working principle of the standard cone crusher and the short-head cone crusher are the same, and the processed materials are coarsely crushed, the feed inlet does not need to be large, but the unloading range is required to be increased, To improve the production capacity, the crushed product requires a relatively uniform particle size. Therefore, the moving cone and the fixed cone are both upright. The moving cone is made into a fungus shape. Near the discharge port, there is a parallel belt with an equal distance between the moving cone and the fixed cone to ensure the uniform particle size of the discharged material. Because of the small slope of the moving cone surface of this type of cone crusher, the material rolls down along the inclined surface of the moving cone when unloading. Therefore, the unloading will be affected by the frictional resistance of the inclined surface, and will also be affected by the centrifugal inertia force during the deflection and rotation of the cone. Therefore, this type of crusher is not free to discharge, so the working principle and calculation are somewhat different from the coarse crushing cone crusher. The difference between standard cone crusher and short head cone crusher: Since the basic structure and working principle of the standard cone crusher and the short-head cone crusher is the same, only the shape of the crushing cavity is slightly different. Therefore, the key to the difference lies in the crushing of the parallel belts. As shown in the figure below, the short-headed parallel belts are longer. Therefore, both the feed and discharge ports are relatively small, and a finer product particle size can be obtained. The standard type is shorter, so the crushed product is thicker and the output is higher. Generally, it is used for medium crushing after the rough crushing, that is, after the jaw or gyratory crusher. The difference between standard cone crusher and short head cone crusher in crushing parallel belt. According to structure and function: spring cone crusher and hydraulic cone crusher. 1. Spring cone crusher The performance of the spring cone crusher is stable, especially the overload protection device of the spring safety system makes the iron block pass through the crushing cavity without harming the equipment. The unique sealing system isolates the stone powder and lubricating oil, which can ensure the reliable operation of the spring cone crusher. The spring cone crusher is mainly used in quarries, stone factories, mining, etc. It plays an important role in the crushing and processing of various metal mines, limestone, granite, basalt, and other ores and construction aggregates. Advantage 1. The moving cone rotates continuously, and the crushing process and the unloading process of the material are continuously alternated. The crushing and unloading are carried out in an orderly manner, which ensures the balance of the material in and out; 2. The breaking speed between the material and the two crushing cones is crushed by squeezing, and the moving cone rotates continuously and evenly, which is higher in production efficiency than a jaw crusher; 3. The speed of the spring cone crusher is high, the inertia of the eccentric movement is large, and the crushing is relatively large, so it has a good hard rock crushing ability; 4. The structure of the spring cone crushing motor cone is relatively precise, and it uses thin oil lubrication to prevent the deformation of the crushed parts caused by the temperature rise during the rotation, and effectively protect the bowl-shaped bush and the shaft copper sleeve; 5. It has a spring safety system and overload protection capability, which can effectively discharge the choking iron and improve the ability of the cone crusher to cope with emergencies; 6. The spring cone crusher is still cheaper than the hydraulic cone crusher, and it is an economical and efficient crusher. Disadvantages: 1. It is not suitable for crushing wet and sticky ores; 2. The weight of the machine is relatively large, it is 1.7-2 times heavier than the jaw crusher of the same size for the mine opening, so the investment cost is higher without preparation; 3. The revolving fuselage is relatively high, which is generally 2-3 times higher than the jaw crusher, so the construction cost of the plant is relatively large; 4. Installation and maintenance are complicated, and maintenance is also inconvenient. 2. Hydraulic cone crusher The hydraulic cone crusher is a new type of cone crusher improved based on the spring cone crusher and based on customer opinions. It is divided into two series, the HPC series hydraulic cone crusher and the HCS series hydraulic cone crusher. It greatly improves the production capacity and crushing efficiency, and also expands the scope of application. The hydraulic cone crusher relies on the rotation of the motor to move around a fixed rotation under the force of the eccentric sleeve through the pulley or coupling, the transmission shaft, and the cone. Therefore, the crushing wall of the cone crusher is sometimes close to and away from the surface of the white wall fixed on the adjusting sleeve, so that the ore is continuously impacted, squeezed, and bent in the crushing cavity to realize the crushing of the ore. Advantage 1. Large crushing ratio and high production efficiency. The combination of higher speed and stroke greatly improves the rated power and passing capacity of the HP crusher and improves the crushing ratio and production efficiency. 2. Low consumption of wearing parts, low operating cost, reasonable structure, advanced crushing principle, and technical parameters, reliable operation, and low operating cost; all parts of the crusher are protected against wear, which reduces maintenance costs to a minimum, and is generally used The life span can be increased by more than 30%. 3. The laminated crushing and the finished product have excellent particle shape. The special crushing cavity designed by the principle of inter-particle lamination and the matching speed replaces the traditional single-particle crushing principle to achieve selective crushing of materials, which significantly improves The fine material ratio and cube content of the product greatly reduce the needle-like material. 4. Hydraulic protection and hydraulic cavity clearing, high degree of automation, reduce downtime, hydraulic adjustment of the discharge opening, and overload protection greatly improve the operation level of the cone crusher, making maintenance easier, more convenient to operate, and shorter downtime; The HP series cone crusher bidirectional iron-passing release hydraulic cylinder can allow iron pieces to pass through the crushing chamber. The cone crusher can hydraulically lift the top and automatically discharge the material in the case of iron-over and instantaneous car jams, which greatly reduces the original spring cone. The crusher needs to be shut down for manual discharging, while many other manufacturers' crushers will shut down due to iron jams. 5. A variety of crushing cavity types, flexible application, and strong adaptability. HP cone crusher only needs to replace fixed cone liner and moving cone liner. The shape of the crushing cavity can be from standard super coarse cavity to short head super fine cavity Transformation to meet the requirements of a wide range of product granularity. Matters needing attention when using: 1. Choose the correct crushing cavity for the material to be crushed; 2. The feed size ratio is appropriate; 3. The feed is evenly distributed within the range of 3600 in the crushing chamber; 4. Automatic control device; 5. The discharge area of the crusher is unobstructed; 6. The specifications of the conveyor belt are compatible with the maximum processing capacity of the crusher; 7. Appropriate selection of the sieve specifications for pre-screening and closed-circuit screening; The following factors will reduce the production capacity of hydraulic cone crushers 1. The fine material smaller than the discharge opening in the feed exceeds 10% of the production capacity of the crusher; 2. The feed contains viscous materials; 3. Lack of feeding control; 4. The feed material distribution around the crushing cavity is uneven; 5. The recommended power is not used; 6. Insufficient screening capacity of the system; 7. The discharge area of the crusher is not smooth. Media Contact Company Name: GUBT Contact Person: Media Relations Email: Send Email Phone: +86(28)87016193 Country: China Website: MENAFN01042021003238003268ID1101847513

(MENAFN - GetNews) Cone crusher is the basic type of crusher equipment in the field of stone crushing. Because it is foundational, its application range is very wide. To meet the crushing requirements of various fields better and more appropriately, cone crushers can be divided into coarse crushing and medium-fine crushing according to the discharge requirements. Also, they can be divided into spring cone crushers, hydraulic cone crushers, and high-efficiency cone crushers according to the structure and function. The following is a detailed introduction to the characteristics and differences of various types of cone crusher equipment.

Coarse crushing: When it comes to coarse crushing, many people will think of a jaw crusher at the first time. Indeed, jaw crusher is the representative of coarse crushing equipment, but to meet the needs of material crushing more economically and efficiently, it is very important to choose coarse crushing equipment reasonably according to the characteristics and requirements of various materials. For example, there are also cone crushers specially used for coarse crushing, which are called gyratory crushers. It is mainly used in the beneficiation industry and other industrial sectors to coarsely crush ores of various hardness. Because the machine needs to process larger pieces of material, the feed inlet is required to be wide, the movable cone is upright, and the fixed cone is inverted to meet the crushing requirements for ore materials. So, what are the advantages of the gyratory crusher compared to the jaw crusher, which is used for coarse crushing? As follows:

1. The crushing cavity has large depth, continuous work, high production capacity, and low unit power consumption. Compared to the jaw crusher with the same width of the feed mouth, the production capacity is more than twice that of the latter, and the power consumption per ton of ore is 0.5-1.2 times lower than that of the jaw crusher.

2. The work is relatively stable, the vibration is lighter, and the basis weight of the machine and equipment is relatively small. The basis weight of the gyratory crusher is usually 2-3 times the weight of the machine and equipment, while the basis weight of the jaw crusher is 5-10 times the weight of the machine itself.

3. It can be filled with the ore, and the large-scale gyratory crusher can feed the raw ore directly, without the need for additional ore bins and feeders. However, the jaw crusher cannot be packed with the ore, and the ore is required to be evenly fed, so it is necessary to set up another ore warehouse (or ore hopper) and a mining feeder. When the ore lump size is greater than 400 mm, it is necessary to install an expensive heavy-duty plate type to the miner.

Medium and fine crushing: In addition to the coarse crushing mentioned above, cone crushers can also be used for medium and fine crushing. According to the current situation of the crushing workshops of most of GUBTcountry's concentrators, most of the medium crushing equipment uses standard cone crushers, and most of the fine crushing equipment uses short-head cone crushers, which has almost been finalized. Since the basic structure and working principle of the standard cone crusher and the short-head cone crusher are the same, and the processed materials are coarsely crushed, the feed inlet does not need to be large, but the unloading range is required to be increased, To improve the production capacity, the crushed product requires a relatively uniform particle size. Therefore, the moving cone and the fixed cone are both upright. The moving cone is made into a fungus shape. Near the discharge port, there is a parallel belt with an equal distance between the moving cone and the fixed cone to ensure the uniform particle size of the discharged material. Because of the small slope of the moving cone surface of this type of cone crusher, the material rolls down along the inclined surface of the moving cone when unloading. Therefore, the unloading will be affected by the frictional resistance of the inclined surface, and will also be affected by the centrifugal inertia force during the deflection and rotation of the cone. Therefore, this type of crusher is not free to discharge, so the working principle and calculation are somewhat different from the coarse crushing cone crusher.

Since the basic structure and working principle of the standard cone crusher and the short-head cone crusher is the same, only the shape of the crushing cavity is slightly different. Therefore, the key to the difference lies in the crushing of the parallel belts. As shown in the figure below, the short-headed parallel belts are longer. Therefore, both the feed and discharge ports are relatively small, and a finer product particle size can be obtained. The standard type is shorter, so the crushed product is thicker and the output is higher. Generally, it is used for medium crushing after the rough crushing, that is, after the jaw or gyratory crusher.

The performance of the spring cone crusher is stable, especially the overload protection device of the spring safety system makes the iron block pass through the crushing cavity without harming the equipment. The unique sealing system isolates the stone powder and lubricating oil, which can ensure the reliable operation of the spring cone crusher. The spring cone crusher is mainly used in quarries, stone factories, mining, etc. It plays an important role in the crushing and processing of various metal mines, limestone, granite, basalt, and other ores and construction aggregates.

1. The moving cone rotates continuously, and the crushing process and the unloading process of the material are continuously alternated. The crushing and unloading are carried out in an orderly manner, which ensures the balance of the material in and out;

2. The breaking speed between the material and the two crushing cones is crushed by squeezing, and the moving cone rotates continuously and evenly, which is higher in production efficiency than a jaw crusher;

4. The structure of the spring cone crushing motor cone is relatively precise, and it uses thin oil lubrication to prevent the deformation of the crushed parts caused by the temperature rise during the rotation, and effectively protect the bowl-shaped bush and the shaft copper sleeve;

The hydraulic cone crusher is a new type of cone crusher improved based on the spring cone crusher and based on customer opinions. It is divided into two series, the HPC series hydraulic cone crusher and the HCS series hydraulic cone crusher. It greatly improves the production capacity and crushing efficiency, and also expands the scope of application. The hydraulic cone crusher relies on the rotation of the motor to move around a fixed rotation under the force of the eccentric sleeve through the pulley or coupling, the transmission shaft, and the cone. Therefore, the crushing wall of the cone crusher is sometimes close to and away from the surface of the white wall fixed on the adjusting sleeve, so that the ore is continuously impacted, squeezed, and bent in the crushing cavity to realize the crushing of the ore.

1. Large crushing ratio and high production efficiency. The combination of higher speed and stroke greatly improves the rated power and passing capacity of the HP crusher and improves the crushing ratio and production efficiency.

2. Low consumption of wearing parts, low operating cost, reasonable structure, advanced crushing principle, and technical parameters, reliable operation, and low operating cost; all parts of the crusher are protected against wear, which reduces maintenance costs to a minimum, and is generally used The life span can be increased by more than 30%.

3. The laminated crushing and the finished product have excellent particle shape. The special crushing cavity designed by the principle of inter-particle lamination and the matching speed replaces the traditional single-particle crushing principle to achieve selective crushing of materials, which significantly improves The fine material ratio and cube content of the product greatly reduce the needle-like material.

4. Hydraulic protection and hydraulic cavity clearing, high degree of automation, reduce downtime, hydraulic adjustment of the discharge opening, and overload protection greatly improve the operation level of the cone crusher, making maintenance easier, more convenient to operate, and shorter downtime; The HP series cone crusher bidirectional iron-passing release hydraulic cylinder can allow iron pieces to pass through the crushing chamber. The cone crusher can hydraulically lift the top and automatically discharge the material in the case of iron-over and instantaneous car jams, which greatly reduces the original spring cone. The crusher needs to be shut down for manual discharging, while many other manufacturers' crushers will shut down due to iron jams.

5. A variety of crushing cavity types, flexible application, and strong adaptability. HP cone crusher only needs to replace fixed cone liner and moving cone liner. The shape of the crushing cavity can be from standard super coarse cavity to short head super fine cavity Transformation to meet the requirements of a wide range of product granularity.

Legal Disclaimer: MENAFN provides the information as is without warranty of any kind. We do not accept any responsibility or liability for the accuracy, content, images, videos, licenses, completeness, legality, or reliability of the information contained in this article. If you have any complaints or copyright issues related to this article, kindly contact the provider above.

Daily(English) Daily(Arabic) All()